Revert "Revert "Use ICF (identical code folding) for building rustc"" #99680
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This reverts commit rust-lang/rust@45575d2, thereby enabling identical code folding again.
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| @@ -195,3 +195,7 @@ rm -r $BUILD_ARTIFACTS/llvm $BUILD_ARTIFACTS/lld | |||
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| echo "Rustc binary size" | |||
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Finished benchmarking commit (c9b3183): comparison url. Instruction count
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Make `[rust] use-lld=true` work on windows Before, it would fail with "error: ignoring unknown argument '-Wl,--icf=all'" This option was introduced in rust-lang#99062 (well, technically rust-lang#99680) See zulip thread: https://rust-lang.zulipchat.com/#narrow/stream/182449-t-compiler.2Fhelp/topic/rust-lld.3A.20error.3A.20ignoring.20unknown.20argument.20'-Wl.2C--icf.3Dall'
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This reverts commit 45575d2,
thereby enabling identical code folding again.
Closes #99440 (again).